Plaster-board.



No. 820,79 PATENTED MAY 15, 1906 H. KIMMET. PLASTER BOARD.

APPLICATION FILED JULYlfi, 1901i UNITED STATES PATENT OFFICE.

HENRY KIMMET. OF ST. JOSEPH, MISSOURI.

PLASTER-BOARD.

Specification of Letters Patent. Application filed July 15, 1906. Serial No. 269,888.

Patented May 15, 1906.

These materials should be combined and' mixed as follows: One thickness of burlap is to be laid on a level surface of the length and width which it is desired to make the lath. Over this is placed a thin layer of cement, shale, and water, thoroughly mixed in the proportions above specified and sufficient to thoroughly cover the burlap, Then place upon this a thin layer of straw, hay, or flax, and over this is poured a sufli'cient amount of the above-described mixture of cement, shale, and water, mixed in the proportions above stated, to penetrate and cover the straw, hay,

or flax and bind it together. An even pressure is then applied to the entire upper surface sufficiently heavy to make the mixture smooth and of uniform thickness. After the mixture has hardened sufficiently to retain its shape the pressure is removed and the mixture allowed to dry, when it is ready for use.

Figure 1 of the accompanying drawings is a perspective view of a lath made out of this mixture of materials, showing the shape in which it is intended to be used. Letter A, Fig. 1, represents the burlap. Letter B, Fig. 1, re resents the straw, hay, or flax to be used 1n the mixture. Letter C, Fig. 1, represents the mixture of cement, shale, and water on each side of the straw, hay, or flax. Fig. 2 shows a cross-sectional view of a lath made out of this mixture. and C refer to the same respective parts and materials as do the letters A, B, and O in %y the use of the above lath on the sides, artitions, and ceilings of buildings no other ath is necessary to. be used. The lath may be nailed on the sides, partitions, and ceilings of buildings with more rapidity and less cost than the ordinary lath, and by placing lath close together, so as to leave no space be tween, no lining or boxing need be used, and

The letters A, B,

the lath willnot be penetrated by heat, cold,

nor dampness. This lath can be papered without further preparation, and, if desired, a coat of plaster or hard finish can be used on the lath. This lath makes a firm and solid wall, can be nailed into readily, and is elastic and will not break.

ters Patent of the UnitedStates, is-

1. In a plaster-board, the combination with a layer of plastic cement and shale, a layer of co-mingled cement and straw or fiber, anda second layer of cement and shale interposed thereupon, of a layer of coarse fabric secured to one of the faces of the board.

2. In a plaster-board, the combination with two layers of lastic cement and shale, of an intermediate ayer of straw and cement, and a la er of burlap secured to one face of the bloch. a

In testimony whereof I have signed my name to this specification in the presence of two subscribing-witnesses.

CARL J GRrswoLn,

O. V. HIOKMAN. 

